Dish-washing machine



J. W. CROOKS. DISH WASHING MACHINE.

APPLICATION FILED SEPT- 25. 1919- 1,385,203. Patented July 19, 1921.

2 SHEETS-SHEET mi il INVENTOR I JZZJYLGS Z. 6 700706. n9 BY ATTORNEY J.W. CROOKS.

DISH WASHING MACHINE.

' APPLICATION FILED SEPT. 25, 1919. x 1,385,203, Patented July 19, 1921.

2 SHEETS-SHEET 2- ATTORNEY UNITED STATE-Sf J'AIES W. CROOKS, OF PELHAM.YORK.

msn-wasme monnm.

Specification of Letters Patent.

Patented July 19, 1921.

Application filed September 25, 1919. Serial No. 320,244.

To all whom it may concern Pelham, in the count of Westchester and Stateof New. York, ave invented certain new 'and useful Improvements in Dish-Washing Machines, of which the following is a specification.

This application is a companion to application for United States LettersPatent filed September 18, 1919, Serial No. 324,282. The presentinvention relates to the water elevator and distributer of a dishwashingmachine particularly adapted for domestic The improvements areillustrated in the accompanying drawings, wherein:

Figure 1, 1s a plan view of the machine, the cover. being partly brokenaway. Fig. 2, is a side elevationof'the machine parts being broken awayand-in section. 1g. 3,

is a cross section of the improved elevator and distributor in the planeindicated by the line 3-3 in Fig. 4. ig. 4 is a top view of the elevatorand distributer, partly in section in the plane indicated by the line4-4 in Fig. 3; Fig. 5, is a detail section of a one of the outlets in aplane indicated by the line 5-5 in rFi 3. Fig. 6, is a detall section ofthe distri uter in the plane indicated by the line 6.-6 in Fig. 4.

Like the machine of the companion ap,-"

plication, the tank A is water tight and has a hinged cover a, which hasa water tight fit upon the top of the tank and which can be swun up outof the way when necessa The mac ine is of sufiicient height to enab e itto be used as a kitchen'table when not in "use as adishwashing machine,and to this end is preferably constructed of galvanized iron or dairytin with a wooden top, both the tank and the cover having a white, vitrified, enameled outer surface which is easily kept clean.

Within the tank A, are removable skeleton wire trays B, having pocketsb, of varying sizes for the dishes and special ockets c, for thesilverware (as shown inig. 1). The bottom e, of the tank is inclinedfrom all directions. toward. a central well 0, which in use is filledwith water. The well C, has at one side an outlet commu aicating with adischar pipe 10, and controlled by a valve M. T is valve M, ishand-operated an s e e shown controlled by the vertical L hand rod m, onthe outside of thetank within Be it known that I, James W. CROOKS, of

e other end of the link 'o,is con-' close the valve. Inv all theserespects, the

present machine is similar to that of the aforesaid application.

The present improvement resides in a new water elevator and distributerwhich is shown in detail in Figs. 3 and 4. It comprises a stationaryouter shell or casing D, which is frusto-conical in shape, increasing indiameter frombottom to top, being open at its to Its lower end is'withinthe well C, and as a series of inlet passages E, at its bottom which donot extend to the level of the top of the well, bein therefore,submerged when water is in t e machine.

The water elevator comprises a rotary propeller having propeller bladesF, of which two are shown, that number being adequate, near the lowerendof the casing D, and just' above the inlets EL These blades are of theproper contour to elevate or force the water upwardly within the casingD, and are just above the level of the top of the inlet passages E, andbelow the top of the well so that they pick up the and elevate T epropeller water as it flows into the casinit within the casing D.

blades are mounted on the lower end of a.

tubeG, which at its upper end is attached to the upper end of a driveshaft I. The shaft I, is journaled at .its u per end in a bearing on arigid cross bar (Fig. 2), se-

cured to the sides ofthe tank A, beneath' the cover a. The lower end ofthe shaft extends throughthe bottom of the well and is directlyconnected with the shaft of an electric motor K, which is of a type tobe operated b current supplied from any ordinary lig t fixture. Themotor K, is mount-' from the shaft I, so that the tube and shaft i turnfree. of the standpipe. This standpipey extends above the top of thewell C, and above any needed water.level in the machine.

At the upper end of the rotary tube-G, is the rotary distributor O. Theimportant features of the,distributer are a deflector and archingdeflector is such that the water elevated by the propeller is divertedoutwardly and downwardly into the trough 12. The trough is annular andencircles the upp'er end of the casing D. The bottom 7. of

the trough is below the upper edge of the casing. It is connected to theouter wall 9 (Fig. 6) of the trough which depends from a top plate It.At the inner edge of the bottom 7", an annular ring 2', rises abovetheupper edge of the casing D, and constitutes the inner wall of thetrough. This inner wall z', is close to the upper end of the easing sothat leakage of water at this place is negligible. The outer wall of thetrough has openings for the discharge of the water. Two such outlets 13,are shown at diametrically opposite points. The outlets are locatedsufliciently high to permit the discharge of the Water in the upper partof the tank so that it will strike the upper edges of theupstandinggdishes in the trays and flow down them. ack of each outlet,

as shown in Fig. 5, is an inclined partition j, extending from the innerwall 2', of the trough entirely across it and outwardly beyondwthe outerwall g. This partition inclines rearwardly with reference to thedirection of rotation of the distributor, as shown by the arrow 14, inFig. 4. Each. tangential outlet 13 also has anupper plate or roof k, thefloor of the trough constituting the floor of the outlet 13, and boththe floor and the roof of the outlet extending beyond the outer wall 9,as shown in Figs. 3 and 5, thus constituting with the outwardlyextending partition j, a projecting nozzle. Each outlet roof is, extendsoutwardly from the top of the inner wall, so that each outlet is thefull height of the trough.

To use the machine, the dishes. etc., are placed in the trays, the wellis filled with washing fluid (water with soap or other detergent), thecover is closed, and the motor is started by turning on the electriccurrent. The water. is elevated by the propellers and discharged by thedeflector into the apertured distributing trough. The upwardly enlargingstationary casing avoids back pressure on the propellers and choking.The water is whirled by the rotating trough and is dischargedcentrifugally and tangentially through the outlets into the upper partof the tank. The water is vigorously showered upon the upper edges ofthe "dishes throughout all parts of the tank, and flows down the dishesto the floor of the tank, and thence back to the well. The water isefficiently and rapidly circulated and three minutes suflices to cleanthe dishes thoroughly. The foul 'water is discharged through the valvedoutlet. Hot rinsing water is then introduced and a circulation thereoffor two minutes suflices to rinse the dishes fliciently.

I claim- 1. A dishwashing machine having, in combination. a tank havinga depressed central well astationary frusto-eonical casing in the tankincreasing in diameter from bottom to top, -said casing having a seriesof water inlets in the bottom thereof communicating with the bottom ofsaid circling the upper end of the casing and having a partitioninclined rearwardly with respect to the direction of rotation of thedistributer extending across the trough back of each outlet andoutwardly beyond the outer wall of said trough and a roof across thetrough above each outlet likewise extending beyond the outer wall ofsaid trough, and the bottom of the trough at each outlet also extendingbeyond the outer wall of the trough.

2. A dishwashing machine having, in combination, a tank; afrusto-eonical casing within said tank increasing in diameter frombottom to top, said casing having water inlets communicating with thebottom of said tank; and a rotary water elevator and distributer, theelevator consisting of elevating propeller blades located near thebottom of said casing above the inlets, and the distributer comprisingan outer trough encircling the top of said casing, an inner deflectorwhich directs the elevated water to the trough, outlets in the outerwall of the trough, and a partition back of each outlet extending acrossthe trough.

3. A dishwashing machine having, in combination, a dishholding tank; anupwardly expanding stationary casing within said tank communicating atits lower end with said tank and open at its top; and a rotary waterelevator and distributer, the

ing, and a distributor an outer trough at the top of casing andreceiving water therefrom, and having an outlet in its outer wall.

"LA all; mlchine having,

10 distributor, the elevator consistmg of an elevating propeller locatednear the bottom of saidcaslng which forces the water upwardly throughthe casing, and the distributer comprising a trough at the top of saidof greater diameter than said casing an having a water discharging out-In witnes whereof, I have hereunto signed my name.

JAMES W.- CROOKS.

